delphimvcframework/samples/eluaserversideviews/Win32/Debug/Lua/logging/file.lua
daniele.teti 3cc8eeeb7e
2014-04-01 15:58:31 +00:00

56 lines
1.5 KiB
Lua

-------------------------------------------------------------------------------
-- Saves logging information in a file
--
-- @author Thiago Costa Ponte (thiago@ideais.com.br)
--
-- @copyright 2004-2011 Kepler Project
--
-------------------------------------------------------------------------------
require"logging"
local lastFileNameDatePattern
local lastFileHandler
local openFileLogger = function (filename, datePattern)
local filename = string.format(filename, os.date(datePattern))
if (lastFileNameDatePattern ~= filename) then
local f = io.open(filename, "a")
if (f) then
f:setvbuf ("line")
lastFileNameDatePattern = filename
lastFileHandler = f
return f
else
return nil, string.format("file `%s' could not be opened for writing", filename)
end
else
return lastFileHandler
end
end
function logging.file(filename, datePattern, logPattern)
if type(filename) ~= "string" then
filename = "lualogging.log"
end
return logging.new( function(self, level, message)
local f, msg = openFileLogger(filename, datePattern)
if not f then
return nil, msg
end
local s = logging.prepareLogMsg(logPattern, os.date(), level, message)
f:write(s)
return true
end
)
end
return logging.file